Ford Galaxy / Ford S-MAX. Manual — part 738

Pinpoint Tests

CAUTION: Remove the DVD ROM before removing the navigation system DVD unit

for circuit testing. Failure to follow this instruction may result in damage to the DVD ROM.
NOTE: Use a digital multimeter for all electrical measurements.

Circuit(s).
Navigation

system display
module.

Navigation

system DVD
unit.

*
*

*

GO to Pinpoint Test

B.

*

The audio unit is
inoperative/does not
operate correctly

Instrument

cluster.

Audio unit.
Navigation

system display
module.

Navigation

system DVD
unit.

*

*
*

*

CHECK all communication between the

instrument cluster, audio unit, navigation
system display module and navigation
system DVD unit. REFER to the WDS.

*

Compact disc

(CD) changer.

*

REFER to: Information and Entertainment

System (415-00 Information and
Entertainment System - General Information,
Diagnosis and Testing).

*

The display is blank

Instrument

cluster.

*

REFER to WDS.

*

Navigation

system display
module.

Navigation

system DVD
unit.

*

*

GO to Pinpoint Test

B.

*

Poor quality/distorted sound
from one or more speakers
(not all speakers)

Speaker(s).
Circuit.
Audio unit.

*
*
*

REFER to: Information and Entertainment

System (415-00 Information and
Entertainment System - General Information,
Diagnosis and Testing).

*

No sound from all speakers

Audio unit.

*

INSTALL a new audio unit.

REFER to: Navigation System Display Module
- Vehicles With: DVD Navigation System with
Touchscreen (415-01 Information and
Entertainment System, Removal and
Installation).
TEST the system for normal operation.

*

No sound from one or more
of the speakers (not all
speakers)

Speaker(s).
Circuit.
Audio unit.

*
*
*

REFER to: Information and Entertainment

System (415-00 Information and
Entertainment System - General Information,
Diagnosis and Testing).

*

The auxiliary audio control is
inoperative/does not
operate correctly.

Circuit.
Audio control

switch.

Audio unit.

*
*

*

REFER to: Information and Entertainment

System (415-00 Information and
Entertainment System - General Information,
Diagnosis and Testing).

*

PINPOINT TEST A : NAVIGATION SYSTEM WILL NOT SWITCH ON

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

A1: CHECK THE NAVIGATION SYSTEM DISPLAY MODULE FOR VOLTAGE

Disconnect Navigation System Display Module
C2ME03-F.

1

Ignition switch in position I.

2

Measure the voltage between the navigation system
display module C2ME03-F pin 1, circuit SBP06J

(BN/RD), harness side and ground; and between the
navigation system display module C2ME03-F pin 2,
circuit CDC33D (VT/GN), harness side and ground.

3

Are the voltages greater than 10 volts?
Yes

GO to A2

.

No

REPAIR circuit SBP06J (BN/RD) or circuit CDC33D
(VT/GN). TEST the system for normal operation.

A2: CHECK THE NAVIGATION SYSTEM DISPLAY MODULE GROUND CIRCUITS FOR
OPEN CIRCUIT

Ignition switch in position 0.

1

Measure the resistance between the navigation
system display module C2ME03-F pin 11, circuit

GD138BF (BK/WH), harness side and ground; and
between the navigation system display module
C2ME03-F pin 12, circuit GD138BG (BK/WH), harness
side and ground.

2

Are the resistances less than 1 ohm?
Yes

INSTALL a new navigation system display module.
REFER to: Navigation System Display Module -
Vehicles With: DVD Navigation System with
Touchscreen (415-01 Information and Entertainment
System, Removal and Installation).
TEST the system for normal operation.

No

REPAIR circuit GD138BF (BK/WH) or GD138BG
(BK/WH). TEST the system for normal operation.

PINPOINT TEST B : NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY

TEST CONDITIONS

DETAILS/RESULTS/ACTIONS

B1: CHECK THE NAVIGATION SYSTEM DVD UNIT FOR VOLTAGE

Disconnect Navigation System DVD Unit C2ME04.

1

Measure the voltage between the navigation system
DVD unit C2ME04 pin 1, circuit SBP06F (BN/RD),

harness side and ground.

2

Is the voltage greater than 10 volts?
Yes

GO to B2

.

No

REPAIR the circuit SBP06F (BN/RD). TEST the system
for normal operation.

B2: CHECK THE NAVIGATION SYSTEM DVD UNIT GROUND CIRCUIT FOR OPEN
CIRCUIT

Measure the resistance between the navigation
system DVD unit C2ME04 pin 13, circuit GD138BH

(BK/WH), harness side and ground.

1

Is the resistance less than 1 ohm?
Yes

GO to B3

.

No

REPAIR the circuit GD138BH (BK/WH). TEST the
system for normal operation.

B3: CHECK CIRCUIT CMN13A (YE/OG) FOR OPEN CIRCUIT

Disconnect Navigation System Display Module
C2ME03-F.

1

Measure the resistance between the navigation
system display module C2ME03-F pin 4, circuit

CMN13A (YE/OG), harness side and the navigation
system DVD unit C2ME04 pin 2, circuit CMN13A
(YE/OG), harness side.

2

Is the resistance less than 5 ohms?
Yes

GO to B4

.

No

REPAIR the circuit. TEST the system for normal
operation.

B4: CHECK CIRCUIT DMN08A (NO) FOR OPEN CIRCUIT

Measure the resistance between the navigation
system display module C2ME03-F pin 18, circuit

DMN08A (NO), harness side and the navigation
system DVD unit C2ME04 pin 23, circuit DMN08A
(NO), harness side.

1

Is the resistance less than 1 ohm?
Yes

GO to B5

.

No

REPAIR the circuit. TEST the system for normal
operation.

B5: CHECK CIRCUIT VMN08A (VT/GY) FOR OPEN CIRCUIT

Measure the resistance between the navigation

1

system display module C2ME03-F pin 8, circuit
VMN08A (VT/GY), harness side and the navigation
system DVD unit C2ME04 pin 10, circuit VMN08A
(VT/GY), harness side.

Is the resistance less than 1 ohm?
Yes

GO to B6

.

No

REPAIR the circuit. TEST the system for normal
operation.

B6: CHECK CIRCUIT VMN09A (VT/GY) FOR OPEN CIRCUIT

Measure the resistance between the navigation
system display module C2ME03-F pin 19, circuit

VMN09A (VT/GY), harness side and the navigation
system DVD unit C2ME04 pin 22, circuit VMN09A
(VT/GY), harness side.

1

Is the resistance less than 1 ohm?
Yes

GO to B7

.

No

REPAIR the circuit. TEST the system for normal
operation.

B7: CHECK CIRCUIT VMN10A (BU/WH) FOR OPEN CIRCUIT

Measure the resistance between the navigation
system display module C2ME03-F pin 20, circuit

VMN10A (BU/WH), harness side and the navigation
system DVD unit C2ME04 pin 9, circuit VMN10A
(BU/WH), harness side.

1

Is the resistance less than 1 ohm?
Yes

GO to B8

.

No

REPAIR the circuit. TEST the system for normal
operation.

B8: CHECK CIRCUIT VMN11A (GR/RD) FOR OPEN CIRCUIT

Measure the resistance between the navigation
system display module C2ME03-F pin 10, circuit

VMN11A (GR/RD), harness side and the navigation
system DVD unit C2ME04 pin 21, circuit VMN11A
(GR/RD), harness side.

1